RU86406U1 - WATER SYSTEM MODULE FOR FISHING - Google Patents

Abstract

1. The module of the water supply system for growing fish, containing fish tanks, a heat exchanger, germicidal ultraviolet lamps, a water circulation pump, compressed air nebulizers, an oxygenator, a denitrifier, pipelines and a mechanical filter, characterized in that the mechanical filter, denitrifier, bioreactor, heat exchanger, bactericidal lamps and an oxygenator are located in the same water treatment unit in the center between the fish tanks, and the bioreactor is filled with plastic granular filler and a fence n perforated metal sheet, wherein the denitrifier and oxygenator located underground. ! 2. The module according to claim 1, characterized in that the perforated sheet is made of stainless steel. ! 3. The module according to claim 1, characterized in that the atomizers of compressed atmospheric air and maintaining the filling granules in smooth motion are installed under the bioreactor compartment. ! 4. The module according to claim 1, characterized in that as the granular material of the bioreactor use polyethylene made of a spiral shape.

Description

The utility model relates to the field of industrial fish farming, namely to closed water supply systems for intensive fish farming.

A known installation for growing fish containing a water circulation system, a cleaning unit, a heating system with a serially connected piping in series with each other, a system for circulating water saturation with oxygen with gas sprayers and a separate cooling system for circulating water (1).

The main significant disadvantages of the known device are:

- unwanted grinding of fish feces and feed residues by impellers of pumps and their homogenization in water;

- an increase in the distance of transportation of waste water with an increase in the number of hatchery pools;

- the bulkiness of individual nodes, which makes it difficult to place several small modules;

- the presence of significant costs for the operation of the device module.

The closest analogue to the claimed prototype is a closed water supply system for growing fish, containing fish tanks, a waste water drain with a pump for lifting water to the water treatment unit — a mechanical filter, compressed air sprays, biological aeration tanks, denitrifier, bactericidal elements, secondary lifting pumps water to the heat exchanger, oxygenator, pipelines that supply purified water back to the pools, and bactericidal ultraviolet lamps (2).

The main significant disadvantage of the known device is the low quality of the water used and the high cost of electricity consumed.

The task is implemented in the claimed utility model due to the fact that the mechanical filter, denitrifier, bioreactor, heat exchanger, ultraviolet bactericidal lamps and oxygenator are located in the same water treatment unit in the center between the fish tanks, and the bioreactor is filled with plastic granular filler, for example, of spiral-shaped polyethylene , and is fenced with a perforated metal sheet, while the denitrifier and oxygenator are located underground.

In addition, the task is achieved in the claimed utility model through the use of a perforated stainless steel sheet, and compressed air nebulizers and maintaining the filling granules in smooth motion are installed under the bioreactor compartment.

Neither from the patent, nor from the scientific and technical literature, nor from the practice of hatcheries and other fish farms are known modules of closed water supply systems that are identical in essential features of the claimed utility model. The conclusion about the novelty of the claimed device is valid here.

The set of essential features claimed as a utility model of the device can be repeatedly implemented and solve the problem.

Thus, this technical solution also meets the criterion of "industrial applicability".

The claimed utility model was tested in experimental conditions of the laboratory of industrial biotechnology of the CaspNIRx Institute (Astrakhan).

The essence of the useful modules is illustrated in the drawing, where:

- figure 1 - shows a General view of the module

- figure 2 - shows a sectional view of a General view of AA

- figure 3 - shows a section of a General view of BB

The module consists of fish tanks 10, having a rectangular shape and arranged one after another in parallel. The water treatment unit 3 (Fig. 1) is located in the center between the pools and has the shape of a rectangle with a length and height equal to the length and height of the walls of the fish tanks. Plums of fish tanks 9 (Fig. 1) of a combined type, collecting water from both the bottom and the surface. The drain pipe 11, (Fig.2, 3) is located on the outside of the pools, has a slope to the water treatment unit and is connected to it near the bottom. The waste water receiving section in the water treatment unit is fenced with a transverse wall, has entrances to the mechanical filter 6 (Fig. 3), a bypass device and a drain 12 (Fig. 1), connected to the sewer. Denitrifier 7 (Fig. 1), located under the mechanical filter underground, and for the supply of water there is a low-power pump 14 (Fig. 3), a carbohydrate source for the development of bacteria (alcohol) is supplied from the tank 13 to the suction pipe through the dispenser 15 (Fig. 1). H) by gravity. The bioreactor 4 has the shape of a rectangle, located in the center of the water treatment unit, filled with plastic granular filler and limited to a perforated sheet 17 (figure 3) made of stainless steel. Under the bioreactor at the bottom there are installed tube sprayers for compressed air, which are connected to the supply pipe. Between the bioreactor and the bypass device is a heat exchanger 5 (figure 1) with a thermostat. The supply of fresh water to recharge the system opens to the bioreactor compartment, behind which are located the ultraviolet bactericidal lamps 16 immersed in water (Fig. 3). The submersible axial type 1 pump for water circulation is located at the bottom of the pumping well of the water treatment unit.

Oxygenator 2 (figures 1 and 3) is located underground under the pump and is connected to the discharge pipe of the pump, to which the supply of technical oxygen is connected. The water supply pipe 8 from the bottom of the oxygenator is brought out and distributed over fish tanks.

The model works as follows.

Wastewater from fish tanks through a drain through a drain pipe flows to the water treatment unit by gravity as a result of the difference in water levels. In the water treatment unit, water first passes through a mechanical filter. As accumulation of dirt in the filter element is washed out from time to time by a stream of water and leaves through a drain into the sewer. Filtered water enters the bioreactor compartment. The set water temperature is maintained by heating it through a heat exchanger. Compressed air supplied from the bottom of the pool contributes to the smooth movement of plastic granules, which regenerates the biological film on their surface, at the same time enriches the water with oxygen and degasses it. With the help of aerobic bacteria, nitrification of toxic ammonia released by fish into relatively non-toxic nitrate occurs in the bioreactor compartment. Part of the water before mechanical treatment enters the denitrifier using a low-power pump, the alcohol necessary as a carbon source for the bacteria enters the denitrifier through the dispenser to the suction pipe of the pump by gravity. Under anaerobic conditions inside the denitrifier, bacteria denitrify nitrate to form nitrogen gas. Water leaving the denitrifier in the bioreactor zone is degassed, nitrogen gas and carbon dioxide dissolved in water are released into the atmosphere. Further, the water passes through the zones of bactericidal ultraviolet lamps, where part of the water bacteria die, which helps to maintain the bacterial number in the water within certain limits. Water after mechanical, biological and bacteriological treatment, degassing and aeration enters the pump, then into the oxygenator, where it is additionally enriched with it under pressure and reverse flows of water and technical oxygen, and then through the water supply pipe again enters the fish tanks.

The technical and economic advantages of the proposed module in comparison with the prototype are as follows:

- improves the process of separation of solid particles from water, and hence the content of dissolved organic substances in water;

- the absence of the need to use some equipment (a pump for the primary lifting of water) reduces financial costs;

- reduction of the distance of transportation of waste water between hatcheries and a water treatment unit with an increase in the number of hatcheries;

- improving the sanitary condition of water;

- overall dimensions of the module are reduced.

Information sources:

(1) RF Patent No. 21998, MKI A01k 61/00, publ. 2002.03.10

(2) V.N. Koren'kov et al. Non-waste closed-breeding fish breeding complex in Sat. scientific works "Industrial fish farming in closed systems" M.VNIIIPRH, 1991, issue 64. 89 p.

Claims (4)

1. The module of the water supply system for growing fish, containing fish tanks, a heat exchanger, germicidal ultraviolet lamps, a water circulation pump, compressed air nebulizers, an oxygenator, a denitrifier, pipelines and a mechanical filter, characterized in that the mechanical filter, denitrifier, bioreactor, heat exchanger, bactericidal lamps and an oxygenator are located in the same water treatment unit in the center between the fish tanks, and the bioreactor is filled with plastic granular filler and a fence n perforated metal sheet, wherein the denitrifier and oxygenator located underground. 2. The module according to claim 1, characterized in that the perforated sheet is made of stainless steel. 3. The module according to claim 1, characterized in that the atomizers of compressed atmospheric air and maintaining the filling granules in smooth motion are installed under the bioreactor compartment. 4. The module according to claim 1, characterized in that as the granular material of the bioreactor use polyethylene made of a spiral shape.